41 lines
1.7 KiB
C++
41 lines
1.7 KiB
C++
// Copyright 2014 The Crashpad Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_POSIX_DROP_PRIVILEGES_H_
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#define CRASHPAD_UTIL_POSIX_DROP_PRIVILEGES_H_
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namespace crashpad {
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//! \brief Permanently drops privileges conferred by being a setuid or setgid
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//! executable.
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//!
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//! The effective user ID and saved set-user ID are set to the real user ID,
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//! negating any effects of being a setuid executable. The effective group ID
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//! and saved set-group ID are set to the real group ID, negating any effects of
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//! being a setgid executable. Because the saved set-user ID and saved set-group
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//! ID are reset, there is no way to restore the prior privileges, and the drop
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//! is permanent.
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//!
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//! This function drops privileges correctly when running setuid root and in
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//! other circumstances, including when running setuid non-root. If the program
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//! is not a setuid or setgid executable, this function has no effect.
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//!
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//! No changes are made to the supplementary group list, which is normally not
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//! altered for setuid or setgid executables.
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void DropPrivileges();
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_POSIX_DROP_PRIVILEGES_H_
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